The nose is designed to condition the air we breath for more efficient use. The nose humidifies the air, filters it, slows it down and pressurizes it for better projection into the lungs. The sinus and nasal membranes deliver a chemical called Nitric Oxide which enhances immune function and dilates blood vessels. It is said that nasally conditioned air can deliver 10 -18% more oxygen to the lungs than mouth breathed air. Mouth breathing dries saliva and makes the teeth more prone to decay. It dries out the mouth soft tissues to render them more irritated.
Allergies and sinus problems tend to be more common in mouth breathers. Establishing nasal breathing, day and night, is one of the major objectives of maxillary re-development treatment. At the evaluation of one’s condition by a qualified practitioner, it is common these days to employ the practice of applying a small strip of paper surgical tape vertically from under the nose to the chin to aid in keeping one’s mouth closed while sleeping.